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Vestibular-evoked myogenic potentials in miniature pigs

ISSN号：1672-2930
期刊名称：《中华耳科学杂志：英文版》
时间：0
分类：R764[医药卫生—耳鼻咽喉科;医药卫生—临床医学] R-332[医药卫生]
作者机构：Institute of Audiology and Balance Science, Xuzhou Medical University, Department of Otorhinolaryngology Head and Neck Surgery, First Hospital of Jilin University, Clinical Hearing Center, Affiliated Hospital of Xuzhou Medical University, Department of OtolaryngologydHead & Neck Surgery, Institute of Otolaryngology of PLA, Chinese PLA General Hospital
相关基金：supported by grants from the National Basic Research Program of China (973 Program) (#2012CB967900);National Natural Science Foundation of China (31300624, 81470684);Postdoctoral Science Foundation of China(2015M571818);Six Major Categories Talent (2014-WSN043, 2011-WS-074);Innovation and Entrepreneurship Training Program for College Students in Jiangsu Province (201510313003Z, 201510313003, KYLX14-1455);Clinic Medical Special Foundation Of Jiangsu Province (b12014032)

作者： Xi Shi, Yan Zhang, Ya Li, Shiwei Qiu, Shili Zhang, Yaohan Li, Na Yuan, Yuehua Qiao, Shiming Yang

关键词： VESTIBULAR, EVOKED, MYOGENIC, POTENTIALS, MINIATURE, pig, MASSETER, MYOGENIC, potential

中文摘要：

Objective: To report detection of vestibular-evoked myogenic potentials(VEMPs) in the miniature pig.Methods: Potentials evoked by 1000 Hz tone bursts were recorded from neck extensor muscles and the masseter muscles in normal adult Bama miniature pigs anesthetized with 3% pentobarbital sodium and Carbachol II.Results: The latency of the first positive wave P from neck extensor muscles was 7.65 ± 0.64 ms, with an amplitude of 1.66 ± 0.34 uv and a rate of successful induction of 75% at 80 d B SPL. The latency of potentials evoked from the masseter muscles was 7.60 ± 0.78 ms, with an amplitude of 1.31 ± 0.28 uv and a rate successful induction of 66% at 80 d B SPL.Conclusion: The latencies and thresholds of VEMPs recorded from the neck extensor muscle and the masseter muscle appear to be comparable in normal adult Bama miniature pigs, although the amplitude recorded from the neck extensor muscle seems to be higher than that from the masseter muscle. However, because of their usually relatively superficial and easily accessible location, as well as their large volume and strong contractions, masseter muscles may be better target muscles for recording myogenic potentials.

英文摘要：

Objective:To report detection of vestibular-evoked myogenic potentials (VEMPs) in the miniature pig. Methods:Potentials evoked by 1000 Hz tone bursts were recorded from neck extensor muscles and the masseter muscles in normal adult Bama miniature pigs anesthetized with 3%pentobarbital sodium and Carbachol II. Results:The latency of the first positive wave P from neck extensor muscles was 7.65 ± 0.64 ms, with an amplitude of 1.66 ± 0.34 uv and a rate of successful induction of 75%at 80 dB SPL. The latency of potentials evoked from the masseter muscles was 7.60 ± 0.78 ms, with an amplitude of 1.31 ± 0.28 uv and a rate successful induction of 66%at 80 dB SPL. Conclusion:The latencies and thresholds of VEMPs recorded from the neck extensor muscle and the masseter muscle appear to be comparable in normal adult Bama miniature pigs, although the amplitude recorded from the neck extensor muscle seems to be higher than that from the masseter muscle. However, because of their usually relatively superficial and easily accessible location, as well as their large volume and strong contractions, masseter muscles may be better target muscles for recording myogenic potentials.

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